MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91f157317f4b73121bcb06400904d5e9eff6461ea6495804878aa3c9b2966dc8. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Formbook


Vendor detections: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 91f157317f4b73121bcb06400904d5e9eff6461ea6495804878aa3c9b2966dc8
SHA3-384 hash: 29b5323744f212fc797247b0b175f82ba4b9aa5152f4ea95e9ec98f441dc0d9d78ad278999723beeb2631190125d0b65
SHA1 hash: 7e40629df2a7d038d69b45a1ba0c6798a00a82c8
MD5 hash: 987b1f73756ba5ac7dfa766fd5eb9b92
humanhash: georgia-oregon-west-undress
File name:OhZSWMIs8IdqVpW.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:953'856 bytes
First seen:2021-07-16 09:30:05 UTC
Last seen:2021-07-16 10:41:16 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:2S0xZ0EG3KQyTs4XlhyI/vbURuhMMOet6t5LIgu/toCdAxdd+UJDdnRfPnZfYqqJ:2S1uD1yk7/2CGd1Dd1PpqJ
Threatray 6'493 similar samples on MalwareBazaar
TLSH T1C115FF3E5AA42A27B777D2644681C015F8BC91DB3A395CD742C7698C390E8027EE7F2D
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
119
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
OhZSWMIs8IdqVpW.exe
Verdict:
Suspicious activity
Analysis date:
2021-07-16 09:32:10 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/5ac80d39-c03e-417b-9c1a-6409f1282c3c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/172157/
Detection(s):
SecuriteInfo.com.Scr.Malcodegdn30.28950.653.UNOFFICIAL
Create hunting rule

Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/63cc9111-170c-4155-abc1-b4fcc0ebc5b6
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/817391
Signature
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 449802 Sample: OhZSWMIs8IdqVpW.exe Startdate: 16/07/2021 Architecture: WINDOWS Score: 100 34 www.sfvoterguide.com 2->34 38 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->38 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 3 other signatures 2->44 11 OhZSWMIs8IdqVpW.exe 3 2->11         started        signatures3 process4 signatures5 52 Tries to detect virtualization through RDTSC time measurements 11->52 54 Injects a PE file into a foreign processes 11->54 14 OhZSWMIs8IdqVpW.exe 11->14         started        process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 Queues an APC in another process (thread injection) 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 28 www.blendandspend.com 74.220.199.6, 49743, 80 UNIFIEDLAYER-AS-1US United States 17->28 30 www.lunzhu168.com 156.235.168.19, 49739, 80 DXTL-HKDXTLTseungKwanOServiceHK Seychelles 17->30 32 8 other IPs or domains 17->32 36 System process connects to network (likely due to code injection or exploit) 17->36 21 wscript.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/91f157317f4b73121bcb06400904d5e9eff6461ea6495804878aa3c9b2966dc8/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-07-16 09:30:07 UTC
AV detection:
16 of 28 (57.14%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=shyvoml7jnzreg6lazaasbgv5hx7mrq6uzevqbehrkr4tmuwnxea._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
489e0e46a5df58a3144cd7a3ecb1fd0e29aa2db5060084ec774f1d2c8c763fd9
Formbook
5d1870672eff4e2ec6d699d654d5268051f7a56f8ca991fefa538eeef380a89c
Formbook
660708a7f99d26de87386ca21682b96179f16f2dbc67578a704cb94d78e9848f
Formbook
852cc855a1aa63d081ebeec5fd688a3c80d50a14d80c760256c4b46208d77b8d
Formbook
a62281360a594e22783fb5dfc0e34645726b22df9ae0939b56a5b41e51289f97
Formbook
ccb857bca12ac7474e7b496a4cc5301cd37a71825f4b9236044ecc7906bd0def
Formbook
d337cba627486e1f99e4a96407591609d888c6656a4010b88047e7cd1ab19482
Formbook
dc5f7d89ab2465597ff7fa9f544326613aeaab2afa6e2e457ba5fc0da15bd450
Formbook
de3c81ef7e59a386f6572d4c095739d45493d90b03c348748200012ec165372f
Formbook
f782375e80f3a68b36457886ac1c6490e2497e6c9fb3ffdb33c1679597f0770e
Formbook
+ 6'483 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat
Link:
https://tria.ge/reports/210716-7xtddcylwe/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.lapashawhite.com/p596/
Unpacked files
SH256 hash:
bf45980be394b1bd631df30d60ce7858b86aba9e7e9bd39538b696baff7bbfb6
MD5 hash:
f54fb63119a6573a30714db5eea91734
SHA1 hash:
777e72e60104ff6f628d99344b18159b14f387a9
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/382c70d3-c5a4-4ee6-ac28-c3f790f1f3cc/
Parent samples :
a62281360a594e22783fb5dfc0e34645726b22df9ae0939b56a5b41e51289f97
91f157317f4b73121bcb06400904d5e9eff6461ea6495804878aa3c9b2966dc8
2d3642f2c997cdd1a84d283738cd6d09f321f681dbc26fab6cca262d59401e20
a6169937c872aefc3f1e5c13e40f05d9cb0cbba3a16490f134b810b47027b035
18f4cf60cabec371c21e141ab1e15754654351ba4bfd85ae717f5c760f3c102a
3f9a8485314c2b666caf0a1a729a96cb974780f331ea9baa0c03e7f02035cf05
SH256 hash:
a3af2b9e81a42f3860924525cb6ad15ffeb7eccbc00204f656445008a3271e7e
MD5 hash:
d8508ff3dc939746ebab8f8114ba994c
SHA1 hash:
b28b53f82be13cdaae78459737276840bb6ffdb9
Link:
https://www.unpac.me/results/382c70d3-c5a4-4ee6-ac28-c3f790f1f3cc/
SH256 hash:
82a4065578bf324c5a382d4e43510bfe37dc2d4accaa25792aecea77c7387714
MD5 hash:
ecff0ff8f308ad9a7ab4e8d8c6632f1f
SHA1 hash:
b2149cd8ad0767e9ee467d85f7f5d97494ecb07a
Link:
https://www.unpac.me/results/382c70d3-c5a4-4ee6-ac28-c3f790f1f3cc/
SH256 hash:
9b5dc46aef904028198033f54a27773d56600dba59da5f7bbf45eaeef73a41c2
MD5 hash:
b46f200d37c3eeb83ec226ac9b471c40
SHA1 hash:
2b90d6f88838c5ddaff9de1d7340adc71e6ae1a7
Link:
https://www.unpac.me/results/382c70d3-c5a4-4ee6-ac28-c3f790f1f3cc/
SH256 hash:
91f157317f4b73121bcb06400904d5e9eff6461ea6495804878aa3c9b2966dc8
MD5 hash:
987b1f73756ba5ac7dfa766fd5eb9b92
SHA1 hash:
7e40629df2a7d038d69b45a1ba0c6798a00a82c8
Link:
https://www.unpac.me/results/382c70d3-c5a4-4ee6-ac28-c3f790f1f3cc/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/91f157317f4b73121bcb06400904d5e9eff6461ea6495804878aa3c9b2966dc8

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe 91f157317f4b73121bcb06400904d5e9eff6461ea6495804878aa3c9b2966dc8

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/172157/

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